<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			document.title="演示文档对象的用法";
			alert(document.lastModified);
			alert("从哪里来到这个网页的："+document.referrer);
		</script>
	</head>
	<body>
	</body>
</html>
